HV518
32-Channel Vacuum-Fluorescent
Display Driver
Features
►
►
►
►
►
►
32 output lines
90V output swing
Active pull-down
Latches on all outputs
Up to 6.0MHz @ V
DD
= 5.0V
-40°C to +85°C operation
General Description
The HV518 is designed for vacuum fluorescent or DC plasma
applications, where it can serve as a segment, digit or matrix
display driver. Each device has 32 outputs, 32 latches and a
32-bit cascadable shift register.
Serial data enters the shift register on the LOW-to-HIGH
transition of the clock input. With latch enable (LE) HIGH,
parallel data is transferred to the output buffers through a
32-bit latch. When LE is low the data is stored in the latch.
When STROBE is LOW, all outputs are enabled; if STROBE
is HIGH, all outputs are LOW.
Applications
►
Vacuum flourescent displays
►
DC plasma displays
Block Diagram
LE
STB
VPP
HV
OUT
1
DIN
CLK
DOUT
HV
OUT
32
32-Bit
Shift
Register
Latches
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
●
Tel: 408-222-8888
●
www.supertex.com
1
HV518
Ordering Information
Package Options
Device
1.980x.600in body (max)
.250in height (max)
.100in pitch
40-Lead PDIP
.653x.653in body
.180in height (max)
.050in pitch
44-Lead PLCC
HV518
-G indicates package is RoHS compliant (‘Green’)
HV518P-G
HV518PJ-G
Pin Configurations
1
40
6
1 44
40
Absolute Maximum Ratings
Parameter
Supply voltage, V
DD
Supply voltage, V
PP
Logic input levels
Continuous total power dissipation
1,2
Operating temperature
Storage temperature
Soldering temperature
3
Value
-0.5V to +6.0V
-0.5V to +90V
-0.5V to V
DD
+0.5V
1200mW
-40°C to +85°C
-65°C to +150°C
260°C
40-Lead PDIP (P)
(top view)
44-Lead PLCC (PJ)
(top view)
Product Markings
Top Marking
HV5 1 8P
YYWW
Absolute Maximum Ratings are those values beyond which damage to
the device may occur. Functional operation under these conditions is not
implied. Continuous operation of the device at the absolute rating level may
affect device reliability. All voltages are referenced to GND.
Notes:
1. Duty cycle is limited by the total power dissipated in the package.
2. For operation above 25
O
C ambient, derate linearly to 85
O
C at
20mW/
O
C.
3. Distance of 1.6mm from case for 10 seconds.
LLLLLLLLLL
Bottom Marking
CCCCCCCCCCC
AAA
Y = Last Digit of Year Sealed
WW = Week Sealed
L = Lot Number
C = Country of Origin*
A = Assembler ID*
= “Green” Packaging
*May be part of top marking
40-Lead PDIP (P)
Top Marking
HV518PJ
YYWW
LLLLLLLLLL
Bottom Marking
CCCCCCCCCCC
AAA
YY = Year Sealed
WW = Week Sealed
L = Lot Number
C = Country of Origin*
A = Assembler ID*
= “Green” Packaging
*May be part of top marking
44-Lead PLCC (PJ)
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
●
Tel: 408-222-8888
●
www.supertex.com
2
HV518
Recommended Operating Conditions
(T
Sym
V
DD
V
PP
V
IH
V
IL
I
OH
I
OL
f
CLK
t
w(CKH)
t
w(CKL)
t
su
t
h
T
A
Parameter
Logic supply voltage
High voltage supply
High-level input voltage
Low-level input voltage
High-level output current
Low-level output current
Clock frequency
Pulse duration, clock high
Pulse duration, clock low
Setup time, data before clock
Hold time, data after clock
Operating ambient temperature
A
= 25°C, unless otherwise noted)
Min
4.5
8.0
3.5
-
-25
-
-
83
83
75
75
-40
Max
5.5
80
-
1.0
-
2.0
6.0
-
-
-
-
85
Unit
V
V
V
V
mA
mA
MHz
ns
ns
ns
ns
°C
Conditions
---
---
V
DD
= 4.5V, See Figure 1
V
DD
= 4.5V, See Figure 1
---
---
V
DD
= 4.5V, See Figure 1
V
DD
= 4.5V
V
DD
= 4.5V
V
DD
= 4.5V
V
DD
= 4.5V
---
Electrical Characteristics
(over recommended ranges of operating ambient temperature unless otherwise noted.)
Sym
I
DD
I
DDQ
I
PP
Parameter
Supply current
Quiescent supply current
Supply current
HV output
Serial output
HV output
Serial output
Min
-
-
-
-
-
V
OH
V
OL
I
IH
I
IL
HV
IN
operating current
LV
IN
operating current
Logic input current high
Logic input current low
70
4.5
-
-
-
-
Typ
-
-
-
7.0
-
-
4.9
-
0.06
0.1
-0.1
Max
10
0.5
12
10
500
-
5.0
5.0
0.8
1.0
-1.0
Units
mA
mA
mA
mA
µA
V
V
µA
µA
Conditions
V
DD
= 5.0V, f
CH
= 6.0 MHz
V
DD
= 5.5V, V
IN
= 0V
Outputs high, T
A
= -40
O
Outputs high, T
A
= 0 to +85
O
Outputs low
I
OH
= -25mA
V
DD
= 5.0V, I
OH
= -20µA
I
OL
= 1.0mA
I
OL
= 20µA
V
IH
= V
DD
V
IL
= 0V
Note:
The total number of ON outputs times the duty cycle must not exceed the allowable package power disspation.
Switching Characteristics
(V
Sym
t
d
t
DHL
t
DLH
t
THL
t
TLH
Parameter
Delay time, clock to data output
Delay time, high-to-low-
level, HV output
Delay time, low-to-high-
level, HV output
PP
= 80V, C
L
= 50pF, T
A
= 25°C, unless otherwise noted)
Min
-
-
-
-
-
-
-
From latch enable
From strobe
From latch enable
From strobe
Typ
-
-
-
-
-
-
-
Max
600
1.5
1.0
1.5
1.0
3.0
2.5
Unit
ns
µs
µs
µs
µs
Conditions
C
L
= 15pF, See Figure 2
V
DD
= 4.5V, See Figure 3
V
DD
= 4.5V, See Figure 4
V
DD
= 4.5V, See Figure 3
V
DD
= 4.5V, See Figure 4
V
DD
= 4.5V, See Figure 4
V
DD
= 4.5V, See Figure 4
Transition time, high-to-low-level, HV output
Transition time, low-to-high-level, HV output
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
●
Tel: 408-222-8888
●
www.supertex.com
3
HV518
Power-Up/ Power-Down Sequences
Power-up sequence should be the following:
1. Connect ground.
2. Apply V
DD
.
3. Set all inputs (Data, CLK, Enable, etc.) to a known state.
4. Apply V
PP
.
The V
PP
should not drop below V
DD
or float during operation.
Power-down sequence should be the reverse of the above.
Input and Output Equivalent Circuits
VDD
VDD
VPP
INPUT
DATA
OUT
HVOUT
GND
GND
GND
Parameter Measurement Information
t
w(CKH)
V
IH
Clock
50%
t
w(CKL)
t
su
Data In
t
h
V
IH
V
IL
Data
Output
V
IL
Clock
50%
t
d
50%
V
IL
V
OH
V
OL
t
w(CKH)
V
IH
Figure 1:
Input Timing Voltage Waveforms
Figure 2
V
IH
Strobe
t
DLH
HV Output
50%
V
IL
t
DHL
90%
10%
t
TLH
t
THL
V
OH
V
OL
Latch Enable
50%
t
DLH
or t
DHL
V
IH
V
IL
V
OH
V
OL
HV Output
90%
10%
Note:
For testing purposes, all input pulses have maximum rise and fall times of 30 nsec.
Figure 3
Figure 4:
Switching-Time Voltage Waveforms
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
●
Tel: 408-222-8888
●
www.supertex.com
4
HV518
Truth Tables
Input
Data In
H
L
X
* Previous state.
Output
CLK
Data Out
H
L
No Change
*
Data In
X
H
L
X
* Previous state.
LE
X
H
H
L
STB
H
L
L
L
HV Outputs
All Low
High
Low
*
Typical Operating Sequence
Clock
● ● ●
Data In
VALID
IRRELEVANT
SR Contents
INVALID
VALID
Latch Enable
Latch
Contents
PREVIOUSLY STORED DATA
NEW DATA VALID
Strobe
HV Output
VALID
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
●
Tel: 408-222-8888
●
www.supertex.com
5
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